NS_E_WMP_MULTIPLE_ERROR_IN_PLAYLIST: meaning and diagnosis

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Description:

A number of queued files cannot be played. To find information about the problem, click the icon next to each file in the List pane.%0

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NS_E_WMP_SERVER_NONEWCONNECTIONS	NS_E_WMP_IMAPI2_ERASE_FAIL

NS_E_WMP_MULTIPLE_ERROR_IN_PLAYLIST

Diagnosing NS_E_WMP_MULTIPLE_ERROR_IN_PLAYLIST in the Windows Media Player playback path

NS_E_WMP_MULTIPLE_ERROR_IN_PLAYLIST (0xC00D11DF) is returned when several queued playlist items failed and the Player returned an aggregate result.

Record what the Player had already completed because later retries often replace the original evidence. The specific rejected condition is several queued playlist items failed and the Player returned an aggregate result.

Controlled playback comparison

Start from the original call and log 0xC00D11DF together with its object and operation phase.
Collect ordered item list, per-item HRESULT, first failure, successful items and rollover behavior before changing the machine.
Use this single-variable test: open each failed item individually and preserve its specific code before rebuilding the queue.
Repeat on a fresh object if the original predates a configuration, device or resource change.
Validate the expected next operation, not just initial open or object creation.

Actions that obscure the cause

applying one fix to all entries without classifying their individual errors.

Technical references

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